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CVE-2026-124194

Microsoft Office•MEDIUM · CVSS 6.5• In the wild In CISA KEV

What is CVE-2026-124194?

Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.

CVSS6.5 NVD 3.1

SeverityMEDIUM

Exploitation In the wild In CISA KEV

Triage statusActive Exploit

ActionPatch immediately

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CWECWE-356

NVD published2026-11-10

NVD last modified2026-11-11

Timeline

2026-11-10Published to the U.S. National Vulnerability Database (NVD)
2026-11-10Added to the CISA Known Exploited Vulnerabilities (KEV) catalog
2026-11-11First covered in a defend.network daily briefing
2026-11-11NVD record last updated
2026-11-24CISA federal remediation deadline (BOD 22-01)

CISA Known Exploited Vulnerability

Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability

Added to KEV2026-11-10

Federal patch deadline2026-11-24

Known ransomware useUnknown

Affected product

Microsoft Office

NVD also lists CPE entries for: Microsoft 365 Apps, Microsoft Office 2021, Microsoft Office 2024

Remediation Steps

Apply the vendor security update for Microsoft Office as a priority.
Restrict network exposure of the affected service to trusted sources until patched.
Review logs and detections for indicators of exploitation.
Confirm fixed versions against the official vendor advisory before deploying.

References

Referenced in our briefings & reports

Vulnerability Priority Report – Week 2 of November 2026 (November 9 – 15)
Microsoft Outlook zero-day exploited; Git RCE in recursive clones; Xen auth bypass active (2026-11-11)

Related vulnerabilities

CVE-2026-96951 – Microsoft Windows (same vendor)
CVE-2026-75682 – Adobe Connect (same vendor)
CVE-2026-85889 – Microsoft Azure Ai Foundry (same vendor)
CVE-2026-69730 – Microsoft Windows (same vendor)
CVE-2026-69829 – Microsoft Windows (same vendor)
CVE-2026-81963 – Microsoft Windows (same vendor)

Microsoft: 390 known exploited vulnerabilities (CISA KEV) →

Browse all tracked CVEs in the defend.network CVE database →

🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.